What is a drug interaction checker?

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Quick Answer

A drug interaction checker explains how drugs interact with one another and whether that interaction is significant. It sometimes provides tips on how to manage drug interactions, according to Drugs.com. A drug interaction checker may also explain how a drug will react with certain foods and beverages.

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A drug interaction is when the effect of one drug is altered by another drug, food or beverage, as the U.S. Food and Drug Administration explains. The alteration could create unexpected side effects. Another type of drug interaction is one that relates to an existing medical condition, such as high blood pressure; some medications are contraindicated for patients with certain medical conditions.